Shoe-filling machine.



A. FERRI.

SHOE FILLING MACHINE.

APPLIUATION FILED JULY 2, laos.

1,120,847, Panted Dec. 15, 1914,

j a3 15 7 f ff 11 3 if UNITED STATES PATENT OFFICE.

ANGELO FERRI, OF HAVERHILL, IiIASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON,`NEW JERSEY, A GORPORATION 0F NEW JERSEY.

SIEGE-FILLING MACHINE.

Original application led October 19, 1906. Serial No. 339,647. Divided and this application filed July 2,

1909. Serial No. 505,604,

To all whom t may concern:

Be it known that I. ANGELO Pimm, a citizen of the United States, residin at Haverhill, in the county of Essexand tate of Massachusetts, have invented certain Im rovements in Shoe-Filling Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference character` on tie drawings indicating like parts in the several figures.

This invention relates to machines for holding and delivering various materials. The invention which is adapted to a large variety of uses is herein shown as embodied in a machine for filling shoes.

'In the manufacture' of shoes it is customary to mix round cork, leather trimmings or other ne granular material with a binder, which' may or may not have the property of softening when heated, and to apply this mixture, known as a filler, to4

the insole of a shoe between the inseams preparatory to laying the outer sole. The present machine which comprises a receptacle and a relatively movable pressure applying member, herein shown as a piston, is adapted to hold and deliver material of this nature; and for convenience, the invention will be described in 'connection with the particular machine shown.

In a device for filling shoes it is advantageous that an even and uniform pressure be maintained upon the filler particularly when said filler is of a thick paste-like consistency; 'and inasmuch as the filler is not continuously discharged it Iis alsoI advantageous that the ressure be yieldingly exerted so that during the intervals that the outlet to the receptacle is closed the parts of the-device may not be subjected to excessive strain. Accordingly, one object of this invention is to rovide yieldin means for producing relative movement the pressure applying member and the receptacle in order to force material from said. receptacle, together with means for intermittently or periodically increasing the .tension of said yielding means as said relative movement is continued. It will be apparent that by so constructing the device thatthe intermittent or periodic actions of the tension increasing means are sufficiently frequent, the yielding means may be caused etwecri to exert an approximately uniform' pressure throughout the extentof the relative movement between the receptacle and the pressure applying member. Heretofore springs have been used to force material from receptacles but these springs have first been compressed and then allowed Ato expand to their effective limit with the result that the pressure upon the material, instead of being uniform or constant, has decreased progressively so that the last of the material has been forced out by a pressure verv much less than that applied to the first ouf the material. In the present invention this disadvantage has been obviated by causing the spring to be compressed and expanded withinsuch narrow limits that the pressure which it ex'erts upon the material is nearly or a proximately constant. Looking at the a ove feature of the invention from another standpoint it may be said to comprise yielding means for producing the relative movement referred to above together with mechanism for increasing the tension of said yielding means to a' predetermined extent .after which said mechanism becomes inoperative and remains so until the outlet to the receptacle is opened, a portion of the liller discharged and the tension of the yielding means somewhat reduced, whereupon tlie tension increasing means is again thrown into operation. The machine may, therefore, be allowed safely to stand idle, the yielding means, however, remaining under sufficient tension so that as the outlet to 'the receptacle is opened and material Withdrawn the relative movement between said receptacle and the pressure applying member will be resumed and the tension increasing mechanism will take up its intermittent action once more. Any convenient means for accomplishing this result may be employed, and in the illustrated embodiment a` piston is advanced by a spring which is periodicallv compressed and illowed to expand, t e compression being brought about through the agency of a pul- Patented Dec. 15, 1914.'

l end to the plunger, and at the other to a rotating part near the inner end wall of the receptacle so that as the plunger moves from or toward said end wall the length of the stirrer increases or diminishes accordingly.

Where a filler, comprising a binder which has the property of softening upon the application of heat, is used, it is desirable to provide means for applying heat to said filler, and a further object of this invention is the provision of such means which, in the illustrated embodimenttakesthe form of a steam jacket surrounding tbL receptacle which contains the filler.

When heat is applied to the walls of a receptacle containing viscous material, the material adjacent the walls is liable to receive an undue amount of heat and thereby to become burned or caked upon these walls. Accordingly, a further object of this invention relates to the provision of means whereby such burning or caking is prevented; and in the illustrated embodiment this means takes the form of a continuously rotating scraper which traverses the inner surface of the walls of the receptacle. t

These and other features of the invention including certain details of construction and combinations of parts will be explained in connection with the following description of a machine and will be pointed out more definitely in the claims.

'Referring now to the drawings :Figure 1 is a vertical longitudinal section of a shoe filling machine with certain parts shown in dotted lines, and Fig..2 is a sec tion on line 3-3 of Fig. 1.

The machine comprises a receptacle provided with a valve and with controlling mechanism for said valve so constructed and arranged that by presenting a shoe in operative relation to the outlet to the receptacle, said valve is opened to allow lling material to flow upon the insole of said shoe. The mechanism'fo'r controlling the iow of material through the outlet and for pressing it against the insole will not be further described here since it forms the subject matter of application Serial No. 339,647, of which the present .application is a division.

Turning now to the dispensinrlpparatus, a receptacle 1 provided with a 'ng opening closed by a cover 2 contains a piston which is adapted to be 'moved by mechanism, presently to be described, to express the `filling material from the receptacle. Surrounding the receptacle is a jacket 3 having an inlet 7 and an outlet 9 for the ingress and egress of a heating Huid.

Inasmuch as the filling material is liable to become burned or caked on the walls of the receptacle by reason of this heat, a scraper 11 is provided, the arms of said scraper being mounted in slots 13 formed in a ring 15 which is rotatable on the piston 5. To prevent relative longitudinal movement between said ring and piston, these members are formed respectively with an interengaging rib 17 and shoulder 19, and a plate 21 1s fastened to said piston to hold said rib a ainst said shoulder. With this construction the scraper may be rotated without affecting the nlovement of the piston. At its forward central portion this scraper is 4formed with a collar 23 which is fastened by a pin 25 to a shaft, said shaft having one end sustained in a bearing in the forward .end of the receptacle and the other in a hollow rod 29 the function of which will presently be described. This shaft extends through the piston 5 and is rotated by means of a pulley 31 and belt 33.

In order that the ingredients of the filling material may be kept thoroughly mixed, as well as to break up vany lumps that Amay be formed, an extensible stirrer is provided. In the illustrated embodiment this stirrer comprises a plurality of series of links 35 pivoted together, the ends of each series being also pivoted respectively to the ring 15 and to the forward end of the scraper 11, so that as the space occupied by the filling material decreases the stirrer will gradually fold up, as shown in dotted lines in Fig. 1.

With the construction thus far described it will be clear that the stirrer and scraper may be continuously rotated without interfering in any way with the movement of the piston and that the stirrer is adapted to accommodate itself automatically to the i varying space occupied by the filling material.

Turning now to the mechanism for producing an iaifproximately constant pressure upon the ing material, the piston 5 is urged forward by a spring 37 which encircles the shaft 27 an is ocated between the rear wall of the piston and the forward end of the rod 29. In the operation of the device this spring is alternately compressed to expand frame 65 is mounted a driving pulley 32 which has a screw threaded bore to correspond with the screw threads on the rod 29, said second pulley being held from axial movement as shown. A belt 93 connected with any suitable source of power is adapted to run on either ulley. It'is clear then that by shifting the Ibelt to the driving pulley the rod 29 will be advanced and the spring 37 compressed. If now the belt be shifted from the driving pulley to the loose pulle the spring will be allowed to expand and orce the' piston lforward; and thus by ,shifting the belt 93 back and forth from lloose pulley to th'e driving pulley the spring will be periodicall compressed and allowe In or er to cause the belt to be `shifted automatically the following mechanism is provided. Rigidly fixed to the screw threaded r0d29 is a collar 39, said collar having an upwardly extending bracket 41 rovided with a pair of rolls -43 on each side thereof. The piston 5 carries a bracket 45 in which is rotatably mounted a small shaft 47 to which are fixed two arms 49 and 51 at approximately right angles to each other. The arm 51 is forked and straddles the bracket lil, its forks extendin between the rolls 43 on either side of -sai bracket. Pivoted to the arm 49 is a link 53 which is loosely pivoted at its opposite end to a crank arm 55 which is fast to a shaft 57. This shaft is attached at one end to a bracket 59 on the'piston by means of a swivel connection 61 while -the opposite end is slidably and rotatably mounted in a bearing block 63'Which in turn Y iS mounted in the spider frame 65. This shaft 57 carries a. groove`67 which extends nearly its entire length as shown. A second crank arm 69 carries in its hub a spline 71 which fits in the groove 67, so that the shaft 57 may be free to move with the piston 5. The outer end of the crank arm 69 is .loosely pivoted to a link 73 which slides `through a bracket 75 fast to the second spider frame 7 7; and this link 73 is pivoted at its upper end to another link 79 which in turn 1s pivoted to the end of a crank arm 81. This crank arm is fast to a small shaft 83 rotatably mounted in a bracket 85 which is integral with the spider frame 77; and fast to the opposite end of this shaft is another crank arm 87 tothe outer end of which is loosely pivoted a belt shifter rod 89. This rod is slidable in a bearing 91, which is integral with the spider frame 65, and is adapted to shift the belt 93 from the loose pulley 30 to the driving pulley 32 and vice versa.

The operation of the device. is as followst-The jacket 3 is connected with a source of steam or other suitable heating medium, the receptacle is filled with {ill- -ing material and power is applied to the belts 93 and 33. If then the mechanism is in the position shown in full lines in Fig. 2 with the belt 93 assing over the pulley 32, the rod 29 wil be advanced and the spring 37 compressed. As the rod 29 moves forward the rollers 43 will press against the end of the forked arm 51, thereby rotating the shaft 47 and depressing the end of the crank arm 55 and rotates the link 453. This in Vturn depresses the shaft 57. The crank arm 69 is thus rotated and. through the links 73 and 79, the crank arm 81, the shaft 83 and the arm 87, moves the belt shifter 89 to the osition shown in dotted lines with the be t shifted to the loose pulley. At this moment the spring and the parts adjacent to it will occupy the yrelative positions shown in dotted lines at the right of the figure. The mechanism will now remain in approximately this position until sufficient material has been removed by the presentation of shoes to the outlet to allow the spring 37 to expand until said s ring and the parts adjacent to it occupy t e relative positions shown in full lines. During this expansion the movements of the link mechanism by which the belt 93 was shifted will be reversed, and the belt will be shifted from the loose to the driving ulley whereby the spring will be compressed once more. It is thusA apparent that the meehanism for advancing the iston is controlled by the removal of material from the receptacle, that the more frequent the periodic compressions of the spring, the more nearly will a uniform pressure be exerted upon the material, and that said frequency can be controlled by properly positionin the parts of the belt shifting mechanism. s the piston is advanced the stirrer is contracted as shown in 'dotted lines; at the same time the stirrer is rotated to thoroughly mix the ingredients of the filling material and the scra er prevents said material from becoming urned or caked upon the walls of the receptacle.

It should be noted that the delivery of material from the receptacle is intermittent and that the periods between deliveries vary in length. It should also be noted that since the outlet is opened by forcing the shoe between levers which areV connected; with a valve, the amount of material delivered at any given instant varies with the position which said shoe occupies. In order to promote brevity the word irregular will be used to characterize this delivery it being understood that the word is intended to cover either of the conditions set forth above. r:Che invention having thus been described, what is claimed as new and desired to secured by Letters Patent is:

1. The combination of a receptacle, a piston, means forI moving said piston along said receptacle, and means controlled by the piston during its movement for controlling the operation of the piston moving means.

2. The combination of a receptacle, a piston, means for advancing the piston, a threaded shaft for operating the piston advancing means, a nut engaging the threaded shaft, and automatic means for intermittently rotatin@r one of said parts.

3. The combination with a receptacle for material of a ressure applying member, yielding means or producing relative movement between said member andhreceptacle, and automatic means for intermittently increasing the tension of said yielding means as said relative movement is continued.

4. A machine of the class described, having in combination, a receptacle provided with an outlet, a piston, a spring for advancing said piston, means for compressing said spring, and means whereby the compressing means periodically comes to rest.

5. A machine of the class described, having in combination, a receptacle provided with an outlet, a piston, resilient means for advancing said piston, and automatic means for compressing the resilient means.

6. A machine of the class described, having in combination, a receptacle fon material, said receptacle being provided with an outlet, a piston. a spring for advancing said piston, means for compressing said spring, and means whereby said com ressin means becomes operative by remova of a quantity of material fromA said receptacle.

T. A machine of the class described, having in combination, a receptacle for material, said receptacle being providedwith an outlet, a piston, resilient means for advancing said piston, and means automatically actuated on removal of a quantity of material to create tension in said resilient means.

8. A machine of the class described having in combination a receptacle provided with an outlet, a piston therein, a'compressing member, a spring interposed between said member and piston for advancing the latter and automatic means for advancing said member when said member and piston have been separated to a predetermined distance.

9. A machine of the class described having in combination a receptacle having a discharge opening, a piston fitted therein, a spring normally acting to move said piston toward said opening. and automatic means for increasing the tension of said spring, as the piston is advanced.

10. A machine of the class described having in combination a receptacle having a discharge opening, a piston fitted therein, an adjusting screw, a spring interposed between said screw and said piston for forcing the latter toward said opening, and means for automatically advancing said screw when said screw and piston have been separated to a predetermined extent.

11. An apparatus of the class described having 1n combination a receptacle from which material is delivered irregularly, and automatic means including a spring constructed and arranged to maintain an approXimately uniform pressure upon said material.

12. The combination of a receptacle, a piston, means for moving said piston along said receptacle, and means responsive to the forward movement of the piston for controlling the operation of the piston moving means.

13. In apparatus of the class described, the combination with a rece tacle of a pres.- sure applf'ing member for orcing material from sai receptacle, a spring for advancing said member, and intermittently operating mechanism for compressing said spring, the operation of said member being automatically controlled in accordance with the tension of said spring.

14. In apparatus of the class described, the combination with a receptacle of means for maintainin material contained in said receptacle un er pressure, comprising a movable pressure applyin member, a spring for advancin said mem er, mechanically actuated mec anism for compressing said spring, and actuating devices responsive to the degree of tension of the spring for rendering said mechanism operative or inoperative.

15. In apparatus of the class described, a receptacle, a movable pressure applying member, a spring, mechanism for creating tension in said-spring, and means set into operation as the spring reaches predetermined limits of minimum and maximum tension for rendering said mechanism operative or inoperative.

16. In apparatus for delivering material, the combination of a receptacle from which, the material is delivered irregularly of in-f termittently actuated mechanical evices, the operation of which is controlled automatically by the discharge of the material, constructed and arranged to maintain upon the materiala pressure variable only within predetermined limits.

17. The combination of a receptacle having an outlet, means for forcing material from said receptacle, an extensible stirrer, an means for operating said stirrer.

18. The combination of a receptacle having an outlet, a piston in said receptacle and a stirrer located between said piston and said outlet, said stirrer being capable of folding as said piston is advanced.

19. A dispensing apparatus, having in combination, a receptacle rovided with a discharge opening, a piston 1n said receptacle means for advancing said pistontoward sai opening, means for stirring the material contained in said receptacle, said stirring means automatically contracting as said piston is advanced, and means for aetuatin'g said stirring means.

20. A dispensing apparatus comprising a receptacle having a discharge opening, a piston itted therein, means for moving said piston toward said opening, an extensible stirrer having a swivel connection `with said piston, and means for rotating the stirrer.

21. A dispensing apparatus comprisin a closed cylindrical receptacle having a ischarge opening at one end, a two part piston therein, one part being rotatable with relation to the other, means for forcing said piston toward said opening` a stirrer frame rotatably mounted in said receptacle between said piston and said opening and connected at one end to the rotatable member of the piston, and means for rotating said stirrer.

2'2. A dispensing apparatus comprising a. receptacle having a discharge opening, a piston fitted therein, means for moving said piston toward said opening, an extensible stirrer connected to said piston adapted to be contracted as the piston is advanced and means for rotating said stirrer.

23. The combination with a receptacle for material and means for forcing material therefrom said receptacle bein provided with a jacket for a heating Hui of means for preventing said material from caking upon the walls of said receptacle.

24. A machine of the class described, having, in combination, a receptacle having an outlet, said receptacle being provided wlth a steam jacket, a piston in said receptacle and a scraper having arms adapted to traverse the inner wall of said receptacle.

Q5. The combination of a receptacle, a piston, means for moving said piston forward in said receptacle, and means controlled by the piston in its movement for causing f urther forward movement of the piston moving means.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

ANGELO FERRI.

Witnesses:

FRED W. SUIBORD, ARTHUR L. RUSSELL.

It is hereby certified that. in Letters Patent No. 1,120,847, granted December 15,

1914, upon the application of Angelo Perri, of Haverhill, Massachusetts, fol' an improvement in Shoe-Filling Maehines, an error appears in the printed Specification requiring correction as followsa Page 3, transpose lines 74 and Ii5; and that the said Letters Patent should be read with this correction therein that the same'may conform to the record of the cese in the Patent Oiee.

Signed and sealed this 9th day of February, A. D., 1915.

[SEAL] J. T. NEWTON,

' Acting Commissioner of Patents. 

